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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 08-25-2004, 10:59 PM   #1 (permalink)
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?Hey guys i was wondering if putting a 87' 325is motor into a 320i is possible and or a 86' 325es motor. Found some locals willing to sell those cars for cheap money. The is car is 400/obo and the es is 700/obo. Lemme know what you think.
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Old 08-25-2004, 11:06 PM   #2 (permalink)
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Yes of course it is possible. All of the E30 BMWs (Except M3) can trade engines all they want even some of the E28 5 series can Swap. Just be sure they have the same tranny(AT or MT)). I know this because I have a 528e engine in my 325is. but if you swap with any ETA engine you might want to think of upgrading valve springs and camshaft. Hope my info helped.
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Old 08-25-2004, 11:26 PM   #3 (permalink)
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With the engine swap which engine is perfered for the most power and will i have to change my rear end?
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Old 08-25-2004, 11:46 PM   #4 (permalink)
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All of the E30 BMWs (Except M3
why would you want a smaller egnine in the M3?

Id say, go for teh S14 E30 M3 engine. it will cost just 1k more or so, and will be worth it.
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Old 08-26-2004, 12:16 AM   #5 (permalink)
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guys its not an e30...its an 82 320 !!!!!
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Old 08-26-2004, 12:18 AM   #6 (permalink)
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Quote:
Originally posted by USCS_POO@Aug 25 2004, 11:46 PM
Yes of course it is possible. All of the E30 BMWs (Except M3) can trade engines all they want even some of the E28 5 series can Swap. Just be sure they have the same tranny(AT or MT)). I know this because I have a 528e engine in my 325is. but if you swap with any ETA engine you might want to think of upgrading valve springs and camshaft. Hope my info helped.
the crank in the ETA is the weak link if you want a high rev engine dont get an e....you would have to change crankshafts...
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Old 08-27-2004, 10:12 AM   #7 (permalink)
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I think that the S38 is a good swap since I have seen dyno curves with 370hp without turbos. Now if I was to put one in I would try and get that S52 in there or the new E46 M3.
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Old 08-27-2004, 10:43 AM   #8 (permalink)
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is it worth it to change the 4banger to a 325is engine?
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Old 08-27-2004, 10:45 AM   #9 (permalink)
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very very very very very much so worth your time the iS is a great motor
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Old 08-27-2004, 11:49 AM   #10 (permalink)
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I agree with Dub man, the torque itself you gain is worth a lot. The s14 motor (M3) can be tuned to like 260hp but the freaking torque is still at like 186. The is itself has 160 and going to a stroker you can get close to 200ftlbs or more.

There is no replacement for displacement buddy, very true once you start tuning.
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Old 08-27-2004, 11:58 AM   #11 (permalink)
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Quote:
Originally posted by XtremeDream@Aug 27 2004, 12:29 PM
I agree with Dub man, the torque itself you gain is worth a lot. The s14 motor (M3) can be tuned to like 260hp but the freaking torque is still at like 186. The is itself has 160 and going to a stroker you can get close to 200ftlbs or more.

There is no replacement for displacement buddy, very true once you start tuning.
to your mother...the goddess of torque
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